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All Journal Jurnal Sains dan Teknologi Jurnal Sains dan Teknologi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Seminar Nasional Teknik Kimia Kejuangan Jurnal Dampak Jurnal Litbang Industri Jurnal Sains & Teknologi Lingkungan Jurnal Sains Teknologi dan Lingkungan (JSTL) Jukung (Jurnal Teknik Lingkungan) Chemistry Indonesian Journal of Chemical Research Jurnal Teknologi Pertanian Andalas Al-Ard: Jurnal Teknik Lingkungan Journal of Bioprocess Chemical and Environmental Engineering Science Dinamika Lingkungan Indonesia Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) BATOBO: Jurnal Pengabdian Kepada Masyarakat

Sri Rezeki Muria

Jurusan Teknik Kimia Fakultas Teknik, Universitas Riau

Author-ID : 325455

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Other

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Produksi Bioetanol Dari Pati Sorgum Dengan Variasi Penambahan Tween 80 Dan Ekstrak Cordyceps Sinesis Mycelum Novebriantika Novebriantika; Elvi Yenie; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The high dependence on fossil fuels and eco friendly fuel needs cause development of biofuels. Bioethanol is one of the biofuels that lately developed. In this research, theproduction of bioethanol from sorghum starch with the addition of Tween 80 and extract of Cordyceps sinensis mycelium variation as a supplement. The purpose of this study was todetermine the effect of variations in the addition of Tween 80 and extract of Cordyceps sinensis mycelium for the bioethanol yield and determine the effect of variations in thefermentation process time for the bioethanol yield. Sorghum starch was hydrolyzed to produce glucose using alpha amylase and glucoamylase enzyme. After hydrolysis wascomplete, the fermentation process was carried out in a 2L fermenter with variation time of 24, 48, 72, and 96 hours, variations addition of Tween 80: extract of Cordyceps sinensismycelium were 15 ml: 1.5 g; and 20 ml: 2.0 g. Bioethanol concentration was analyzed by gas chromatography. The addition of tween 80 and extract of Cordyceps sinensis mycelium effect on the activity of Saccharomyces cerevisiae in converting the sorghum starch into bioethanol, which can preserve viability of cell until the end of fermentation and produced higher ethanol yield. The production of bioethanol from sorghum starch results the best conditions on addition 20 ml of tween 80 and 2.0 grams of extract of Cordyceps sinensis mycelium in 96 hours fermentation time with concentration of bioethanol is 9,15024 mg/ml.Keywords: bioethanol, Cordyceps sinensis mycelium, hydrolysis, sorghum starch, tween 80

Ekstrak Daun Salam (Syzgium Polyantha L) Dengan Metode Soxhlet Sebagai Inhibitor Korosi Pada Baja Karbon ASTM A36 Dalam Media Korosi NAOH Dan HCL Oding Sitorus; Komalasari Komalasari; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Corrosion is defined as the result of damage from a chemical reaction between a metal and its environment. The use of inhibitors is one way to inhibit the corrosion rate. Bay leaf extract is an organic material that can be used as an inhibitor. The purpose of this study was to determine the effect of adding bay leaf extract on the corrosion rate of ASTM A36 carbon steel in 0.5 M HCL and 1 M NaOH corrosive media. The extraction method used was socletation with a ratio of ethanol : distilled water 1: 3 and immersion time of 24 hours, 36 hours, 48 hours and 60 hours. The effectiveness of using bay leaf inhibitors (0 and 2.5 gr/L) is known through the weight loss test. FTIR test results show that the bay leaf extract contains tannin compounds which can inhibit the corrosion rate that occurs in ASTM A36 carbon steel when used as a corrosion inhibitor. The best efficiency occurred at a concentration of 2.5 g / L with a soaking time for 60 hours in a 0.5 M HCL solution of 82%. Keywords: bay leaf extract, carbon steel, corrosion rate, inhibitor efficiency

Pengaruh Komposisi Nutrisi Terhadap Laju Biodegradasi Styrofoam Menggunakan Ulat Hongkong (Larva Tenebrio Molitor) Sri Armita Sari; Elvi Yenie; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Styrofoam is a persistent plastic that is difficult to decompose naturally in the environment, is microplastic, which causes its accumulation as a major contaminant in soils, rivers and oceans. One method to process styrofoam waste is biodegradation. Biodegradation of styrofoam waste using mealworm (Tenebrio molitor larvae) was carried out by giving styrofoam as the main feed. The mealworm has been studied for their potential as decomposer of styrofoam due to best quality nutrient content. This study aims to increase the rate of biodegradation of styrofoam. Styrofoam waste used in this research is the type of Extruded Polystyrene (XPS) with variation of composition nutrients (tofu waste, bran, and yeast). The result showed that addition of bran nutrients could increase biodegradation rate by 27,26 mg/day with the highest percentage of 42,41% compared to other treatments for 28 days of observation.Keywords: styrofoam waste, biodegradation, mealworm, biodegradation rate, nutrition.

Pengaruh Kecepatan Pengadukan Pada Pembuatan Bioetanol Dari Pelepah Sawit Menggunakan Saccharomyces Cerevisiae Meilano Ashari Akbar; Adrianto Ahmad; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Indonesia is one of the largest oil producer in the world. Palm frond is a type of plant lignocellulose comprising lignin, cellulose and hemicellulose. Where the presence of cellulose, the palm fronds can be used as raw material in the manufacture of bioethanol by converting cellulose into glucose. Bioethanol production from palm fronds can be done through a process of fermentation. The microorganisms used in this study was Saccharomyces cerevisiae. The purpose of this study was to determine the effect of stirring speed in the fermentation process to produce bioethanol produced to determine the best time and fermentation to ethanol conversion of palm fronds. Steps being taken in this study include delignification, purification powder palm fronds, hydrolysis and fermentation. In the fermentation process variation stirring speed of 100 rpm, 150 rpm, 200 rpm, and 250 rpm. The results showed that the hydrolysis of cellulose by acid produced initial sugar concentration to a maximum of 82,41 g/L. The best stirring speed in this research is 250 rpm and the best fermentation time is 96 hours with ethanol levels obtained at 3% or 23,67 g/L.Keywords : bioethanol, fermentation, hydrolysis, saccharomyces cerevisiae, stirring

Pembuatan Bioetanol Dari Limbah Padat Sagu Menggunakan Enzim Selulase Dan Yeast Saccharomyces Cerevisiae Dengan Proses Simultaneous Sacharificatian and Fermentation (SSF) Dengan Variasi Konsentrasi Substrat Dan Volume Inokulum Yolanda Amalia; Sri Rezeki Muria; Chairul Chairul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Bioethanol is a renewable alternative energy source that can be used as an alternative fuel . One material that has potential as bioethanol feedstock is a solid waste sago , which is the sago industry solid waste that has not been optimally dimanfatkan . The content of cellulose in the solid waste can be converted into bioethanol sago by using simultaneous saccharification and fermentation ( SFS ) process . This research aims to find out how much solid waste can be converted into bioethanol sago with variation of substrate concentration and volume of inoculum , and to determine the influence of substrate concentration and volume of inoculum at the SFS . The variation of this research are the substrate concentration 40 g , 60 g and 80 g and volume variations of inoculum 10 % and 12.5 % at the fermentation time for 96 hours at pH optimum of 5. The process of saccharification uses cellulase enzymes and Saccharomyces cervisiae yeast for the fermentation process. The samples were conducted by using alcoholmeter . The results of this research showed that the highest ethanol which obtained at the SFS process using cellulase enzyme and Saccharomyces cervisiae yeast reached 8 % for 72 hours fermentation time, the variation of the substrate concentration 80 g and 12.5 % inoculum volume Keywords : ethanol , cellulase enzymes , fermentation , sago , Saccharomyces cerevisiae

Pembuatan Bioetanol Dari Kulit Nanas (ananas comosus l.) Menggunakan Enzim Selulase Dan Yeast Saccharomyces Cerevisiae Dengan Proses Simultaneous Sacharificatian and Fermentation (SSF) Sally Mandari; Elvi Yenie; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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One of energy source alternative that can be used as a substitute for fossil fuel-based energy, is bioethanol. Bioethanol is biochemistry fluid from fermentation process of sugars from carbohydrate sources by using microorganisms. The raw material of bioethanol production is very diverse, like pineapple peel. Pineapple peel can be used as raw material for bioethanol production because contain of fiber, carbohydrates and sugar. This study aims to make bioethanol from pineapple peel with Sacharificatian Simultaneous and Fermentation (SSF) process with cellulase enzyme variation are 1%, 3%, 5%, 7%, and 10% v / v substrate and fermentation time are 2, 3, and 4 days. From the research is obtained the highest bioethanol concentration is 8% on the addition of cellulase enzymes 10% v / v substrate with 3 days fermentation time. Keyword: Bioethanol; Pineapple Peel; Saccharomyces Cerevisiae; Cellulase; SSF

Produksi Bioetanol Dari Pati Sorgum Dengan Variasi Penambahan Tween 80 Dan Waktu Fermentasi Santoso Nugroho; Elvi Yenie; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Energy consumption is increasing steadily with the population growth and industrial development. Therefore, a substitute should be found. Bioethanol has been pointed out as asolution for variety complex problems related to energy and environmental issues. Sorghum [Sorghum bicolor (L) Moench] is considered to be a viable and renewable feedstock forbioethanol production because it high starch contains. The use of tween 80 as a growth supplement can help alter the substrate structure and make it more accessible to enzim, thuscan improve bioethanol yields. Simultaneous saccharification and fermentation was used to produce bioethanol from sorghum starch using commercial alpha amylase andglucoamylase. The fermentation were done in a 2 L bioreactor in batch mode (T = 20-300C; pH = 4,5). The variabel studied were fermentation time (24, 48, 72 and 96 h) and tween 80(7,5 and 10 ml/l). Bioethanol concentration were analyzed using Gas Ghromatography. The optimum amount of tween 80 to be added was 10 ml/l, which result the highest bioethanolyield 8,74 g/l in 96 h of fermentation.Keywords : bioethanol, tween 80, sorghum starch, simultaneous saccharification and fermentation.

PENGARUH VARIASI LAJU ALIR GAS CO2 TERHADAP PENYISIHAN COD DAN PENYERAPAN CO2 OLEH Chlorella sp. MENGGUNAKAN FLAT-PHOTOBIOREACTOR PADA POME Shinta Elystia; Meisy Dhyta Amelia; Sri Rezeki Muria
Jurnal Teknologi Pertanian Andalas Vol 24, No 1 (2020)
Publisher : Universitas Andalas

Penelitian ini bertujuan untuk mengetahui pengaruh laju alir gas CO2 terhadap efisiensi penyisihan COD dan penyerapan CO2 oleh Chlorella sp sebagai upaya memperbaiki kualitas limbah cair kelapa sawit. Penelitian dilakukan secara batch menggunakan flat-photobioreactor dengan variasi laju alir gas CO2 yaitu 0,4 Lpm; 0,6 Lpm; dan 0,8 Lpm. Penelitian berlangsung selama 7 hari dengan memanfaatkan matahari sebagai sumber cahaya. Berdasarkan hasil penelitian, jumlah sel mikroalga tertinggi terdapat pada laju alir gas CO2 0,6 Lpm sebesar 7,22 x 106 sel/ml. Efisiensi penyisihan COD dan penyerapan CO2tertinggi terdapat pada flat-photobioreactor dengan laju alir gas CO2 0,6 Lpm pada hari ketujuh. Efisiensi penyisihan COD sebesar 88,9% dan penyerapan CO2 tertinggi sebesar 7,78572 mg/l.

Produksi Lipid dari Mikroalga Scenedesmus sp. Pada Media Limbah Cair Tahu dengan Variasi Konsentrasi Limbah dan Photoperiod Shinta Elystia; Dian Larasati; Sri Rezeki Muria
Al-Ard: Jurnal Teknik Lingkungan Vol. 5 No. 2 (2020): Maret
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Kebutuhan energi di berbagai negara lebih banyak dipenuhi dari bahan bakar fosil dan mengalami peningkatan setiap tahunnya sementara cadangan minyak bumi hanya cukup untuk 18 tahun ke depan. Berbagai penelitian telah dilakukan untuk memanfaatkan mikroalga sebagai bahan baku biodiesel. Scenedesmus sp. memiliki tingkat pertumbuhan dan produksi lipid yang tinggi dan memiliki asam lemak yang memadai untuk sintesis biodiesel serta dapat memanfaatkan bahan organik sebagai nutrisi berupa limbah cair tahu sehingga sinergi antara pengolahan limbah cair dan produksi biomassa dapat berjalan dengan baik.. Pada penelitian ini akan diteliti potensi mikroalga Scenedesmus sp. dengan variasi pemberian limbah cair tahu dalam medium kultivasi (0%, 20%, 40%, 60%, 80%, 100%) dengan perbandingan fotoperiod terang:gelap (16:8, 14:10, 12:12, dan 24:0) dan waktu pengambilan data pada hari ke-0, 1, 3, 5, 7, 9, 11, dan 13. Berdasarkan hasil penelitian diperoleh kadar lipid tertinggi sebesar 27,12% pada pemberian limbah cair tahu 20% dan fotoperiod 12:12 dengan efisiensi penyisihan COD sebesar 73,91%.

PENINGKATAN KANDUNGAN LIPID DAN BIOMASSA Mikroalga Scenedesmus Sp. DARI MEDIA KULTIVASI LIMBAH CAIR TAHU SEBAGAI BAHAN BAKU BIODIESEL Shinta Elystia; Aisyah Sri Lestari; Sri Rezeki Muria
Jukung (Jurnal Teknik Lingkungan) Vol 5, No 2 (2019): September 2019
Publisher : Program Studi Teknik Lingkungan Fakultas Teknik Universitas Lambung Mangkurat

Sumber energi semakin berkurang diiringi dengan semakin besarnya kebutuhan energi. Hal ini dapat diantisipasi dengan melakukan pencarian sumber energi terbarukan. Upaya untuk mengantisipasi kelangkaan energi adalah dengan memanfaatkan mikroalga sebagai bahan baku bioenergi. Mikroalga Scenedesmus sp. adalah salah satu species yang memiliki kadar lipid tertinggi yang dapat digunakan sebagai bahan baku biodiesel. Oleh karena itu untuk memperoleh biomassa yang besar, perlu dilakukan kultivasi. Salah satu media kultivasi adalah limbah cair tahu. Kandungan pada limbah cair tahu dapat menjadi nutrisi bagi pertumbuhan mikroalga. Senyawa organik dan anorganik dalam limbah diserap mikroalga dan dihasilkan oksigen yang dapat mengurangi kadar COD dalam limbah. Perlakuan pada penelitian ini perbedaan volume limbah cair tahu sebesar 0%, 20%, 40%, 60%, 80% dan 100% serta intensitas cahaya 1000 lux - 4000 lux pada Fotoperiod Terang: Gelap (T:G) 12:12. Parameter yang diamati adalah jumlah sel, lipid dan efisiensi penyisihan COD. Berdasarkan hasil penelitian diperoleh kondisi optimal pada volume limbah cair tahu 20% dan intensitas cahaya 4000 lux dengan jumlah sel 6.63 x 106 sel/ml, lipid 29.73 % serta penyisihan COD 78,26%. Kata Kunci: COD, Intensitas Cahaya, Lipid, Volume Limbah Cair Tahu, Scenedesmus sp. The source of energy decreases accompanied by the increasingly large demand for energy. This can be anticipated by searching for renewable energy sources.The effort to anticipate energy scarcity by using microalgae as a raw material of bioenergy. Microalgae Scenedesmus sp. is one of the species that has the highest lipid content that can be used as a raw material of biodiesel. Therefore, to obtain large biomass, needs to be done of cultivation. One of the cultivation media is tofu waste water. The content of tofu waste water can be a nutrient for microalgae growth. Organic and inorganic compounds in waste are absorbed by microalgae and oxygen is produced which can reduce levels of COD in waste. The treatment in this study was the difference in the volume of tofu waste water by 0%, 20%, 40%, 60%, 80% and 100% and the light intensity of 1000 lux - 4000 lux in the Light: Dark (T: G) Photoperiod 12:12. Parameters observed were cell count, lipid and COD removal efficiency. Based on the results of the study obtain optimal conditions in the volume tofu waste water 20% and light intensity 4000 lux with cell numbers 6.63 x 106 cells / ml, 29.73% lipid and COD removal eficiency 78.26%. Keywords: COD, Light Intensity, Lipid, Scenedesmus sp., Tofu Waste Water,

Co-Authors Adella, Lufya Adli Satria Sandika Adrianto Ahmad Adrianto Ahmad Aisyah Sri Lestari Andhika Chandra Artha, Ulfa Dwi Aulia Masta Bahruddin Bahruddin Bahruddin Bonita Esther FS Boy Jansen Roberto Manik Chairul Chairul Chairul Chairul Darmayanti, Indah David Andrio Devita Ulfa Sari, Devita Ulfa Dewi Kusuma Nurmalasari Dian Larasati Dian Larasati Diana Aprila Dina Citra Naomi Dina Citra Naomi Harianja Doni Fozla Dwi Laura Pramita Elfina Noviarni Chandra Elgina May Lestari Elvi Yenie, Elvi Erlangga, Herta Furaida EVELYN EVELYN Evelyn Evelyn Fajril Akbar Fanani, Adita Suri Fauzani, Rhanti Fauzy Isnandar Febrina Adelina Sigalingging Fikri Miftahul Shiddiq Firmanto, Firmanto fitriyanti fitriyanti Gita Aziza Salis, Gita Aziza Hamzah, Nirwana Hasti, Fucy Adilla Hasti, Fucy Adilla Hengky Darma Satria, Hengky Darma Hilmiyati Hilmiyati Ida Zahrina Ikhsan ' Fajrin Indah Darmayanti Darmayanti Indah Kartika Zulfa Indah Kartika Zulfa Indra Purnama Insani, Suciati Dwi Irdoni HS Irma Damayanti Isabella Amalia Denisa Putri Jeckson, Edie Jelizanur Jelizanur Jessar Hendrianto Juarsa, Tri Khairat Komalasari Komalasari Larasati, Dian Lely Rahmawati Saragih Lidya Anggraini Lita Darmayanti M. Rafi Yunanda Masriza, Maya Masroah Tuljannah Mastiar Krisdayanti Sinaga Maya Ratna Sari Mayang Sari Meilano Ashari Akbar Meisy Dhyta Amelia Meisy Dhyta Amelia Meliana Dewi Mesy Susri Darsi Muhammad Rivai Mustika Chairani Mustika Chairani Mutia Nurrahmadhani Niken Triani Klaway Reza Nova Diyana Nurhanifah Nova Ramadhani Farnas Novebriantika Novebriantika Novira, Tria Bela Novriandi, Rizky Nur Irfana Mardiyah Nurul Annisa Nuryanti, Lidya Oding Sitorus Okky Rizky Sinaga Padil Padil Purwoko, Agus Putri, Aulia Dewi Putri, Bella Nadiah Rahani Rahani Rendy Hidayat Resna Rauda Pratiwi Resna Rauda Putri Resti Ossi P Riko Naldo Saputra Rizkya Ramadhani Rohaya, Rohaya Roin Nuretha Roy Ronald Siburian, Roy Ronald Rozanna Sri Irianty Sakinah Rhajani Sally Mandari Sandy Juliana Sari Santoso Nugroho Sari, Nurriya Mayang Sheilviana Angela Shindi Unada Shinta Elystia Silvia Reni Yenti Sitinjak, Jufri Suanto Sri Armita Sari Sri Helianty Sri Indira Puspa Pertiwi Sri Indira Puspa Pertiwi SUSANTO, RENO Syelvia Putri Utami Tantri Wilinda Julia Tasbieh, Hayatrie Tri Lusi Lisa Dila Vonny Meidina Rizani Vonny Meidina Rizani Wenny Andini Wulandari, Zarah Ayu Yelmida Azis Yolanda Amalia Yuliyana Rahmawati Zahra Nadia Elysahaq Zuchra Helwani Zul Fadly Khaira Zuqni Meldha

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